什么是Essay的Thesis Statement？
如题： Robert Frank is a great photographer because of his particular force in all aspects of photography.
What are other Introductory Statement?
What is the Thesis Statement?
Thesis Statement就是中心句，文章给出的例子和内容都要围绕Thesis  的意思写。楼主的句子可以做THESIS，只要楼主写的都是他的particular force怎么让他变成一个技艺精湛的摄影师就OKAY啦。introductory statement是把读者引入文章的句子，不一定要和文章中心意思相干，如The art of photography is a modern art, but it does not lack the many virtuosos as oil painting and sculpting in ancient times.